{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["cell line", "DNA", "cell type", "RNA", "protein"], "input": "Sequence variation in the long terminal repeat ( LTR ) region of HIV-1 was analyzed in viral isolates of 17 infected individuals ."}
{"cell line": [], "DNA": ["long terminal repeat ( LTR ) region", "LTR"], "cell type": [], "RNA": [], "protein": []}